[INFO] fetching crate backtrack 0.3.0... [INFO] testing backtrack-0.3.0 against 1.55.0 for beta-1.56-1 [INFO] extracting crate backtrack 0.3.0 into /workspace/builds/worker-92/source [INFO] validating manifest of crates.io crate backtrack 0.3.0 on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate backtrack 0.3.0 [INFO] finished tweaking crates.io crate backtrack 0.3.0 [INFO] tweaked toml for crates.io crate backtrack 0.3.0 written to /workspace/builds/worker-92/source/Cargo.toml [INFO] crate crates.io crate backtrack 0.3.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4888b40b397117fec6d774dc0182624ac9b7baa66baf2d9b853bc631c4023653 [INFO] running `Command { std: "docker" "start" "-a" "4888b40b397117fec6d774dc0182624ac9b7baa66baf2d9b853bc631c4023653", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4888b40b397117fec6d774dc0182624ac9b7baa66baf2d9b853bc631c4023653", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4888b40b397117fec6d774dc0182624ac9b7baa66baf2d9b853bc631c4023653", kill_on_drop: false }` [INFO] [stdout] 4888b40b397117fec6d774dc0182624ac9b7baa66baf2d9b853bc631c4023653 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4f38dfac617f811b0ef0b3a43569269b797555651a0237e7403d907d1b056b54 [INFO] running `Command { std: "docker" "start" "-a" "4f38dfac617f811b0ef0b3a43569269b797555651a0237e7403d907d1b056b54", kill_on_drop: false }` [INFO] [stderr] Compiling backtrack v0.3.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.44s [INFO] running `Command { std: "docker" "inspect" "4f38dfac617f811b0ef0b3a43569269b797555651a0237e7403d907d1b056b54", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4f38dfac617f811b0ef0b3a43569269b797555651a0237e7403d907d1b056b54", kill_on_drop: false }` [INFO] [stdout] 4f38dfac617f811b0ef0b3a43569269b797555651a0237e7403d907d1b056b54 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 891164643c2cda58206f59d3a045ff43268d30e62a2dd7111fc667bf1d1319a4 [INFO] running `Command { std: "docker" "start" "-a" "891164643c2cda58206f59d3a045ff43268d30e62a2dd7111fc667bf1d1319a4", kill_on_drop: false }` [INFO] [stderr] Compiling semver v1.0.3 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling libc v0.2.98 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling itoa v0.4.7 [INFO] [stderr] Compiling syn v1.0.73 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Compiling itertools v0.9.0 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling clap v2.33.3 [INFO] [stderr] Compiling crossbeam-deque v0.8.0 [INFO] [stderr] Compiling rustc_version v0.4.0 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling csv-core v0.1.10 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling cast v0.2.7 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling criterion-plot v0.4.3 [INFO] [stderr] Compiling bstr v0.2.16 [INFO] [stderr] Compiling serde_cbor v0.11.1 [INFO] [stderr] Compiling csv v1.1.6 [INFO] [stderr] Compiling tinytemplate v1.2.1 [INFO] [stderr] Compiling criterion v0.3.4 [INFO] [stderr] Compiling backtrack v0.3.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 27.90s [INFO] running `Command { std: "docker" "inspect" "891164643c2cda58206f59d3a045ff43268d30e62a2dd7111fc667bf1d1319a4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "891164643c2cda58206f59d3a045ff43268d30e62a2dd7111fc667bf1d1319a4", kill_on_drop: false }` [INFO] [stdout] 891164643c2cda58206f59d3a045ff43268d30e62a2dd7111fc667bf1d1319a4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] dc5c184fca4efce64021f4e4e188ed63059cd014fe5f5eb478909ef9855808a7 [INFO] running `Command { std: "docker" "start" "-a" "dc5c184fca4efce64021f4e4e188ed63059cd014fe5f5eb478909ef9855808a7", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.22s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/backtrack-b983e4f220b3032d) [INFO] [stdout] [INFO] [stderr] Running tests/it/main.rs (/opt/rustwide/target/debug/deps/it-af324bb292e4098e) [INFO] [stdout] running 6 tests [INFO] [stdout] test problems::count_up::tests::count_up_sat ... ok [INFO] [stdout] test problems::count_up::tests::count_up_unsat ... ok [INFO] [stdout] test problems::total_sum::tests::sums_sat3 ... ok [INFO] [stdout] test problems::total_sum::tests::sums_sat4 ... ok [INFO] [stdout] test problems::total_sum::tests::sums_unsat_too_few ... ok [INFO] [stdout] test problems::total_sum::tests::sums_unsat_too_many ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 18 tests [INFO] [stdout] test bit_queens::tiny_bit_at_least ... ok [INFO] [stdout] test count_up::count_up_search_nosat ... ok [INFO] [stdout] test count_up::count_up_search_sat ... ok [INFO] [stdout] test count_up::total_sum_unsat_unique ... ok [INFO] [stdout] test n_queens::four_queens_search_nodes ... ok [INFO] [stdout] test n_queens::four_queens_search_sat ... ok [INFO] [stdout] test n_queens::four_queens_unsat_unique ... ok [INFO] [stdout] test total_sum::total_sum_search_sat_cached ... ok [INFO] [stdout] test total_sum::total_sum_search_sat ... ok [INFO] [stdout] test total_sum::total_sum_unsat_unique ... ok [INFO] [stdout] test zero_sized::zero_len_problem_cached ... ok [INFO] [stdout] test total_sum::total_sum_unsat_unique_cached ... ok [INFO] [stdout] test zero_sized::zero_sized_len_problem_cached ... ok [INFO] [stdout] test zero_sized::zero_sized_problem ... ok [INFO] [stdout] test zero_sized::zero_len_problem ... ok [INFO] [stdout] test zero_sized::zero_sized_len_problem ... ok [INFO] [stdout] test zero_sized::zero_sized_problem_cached ... ok [INFO] [stderr] Doc-tests backtrack [INFO] [stdout] test bit_queens::equivalent_n_queens ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.35s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test src/lib.rs - (line 23) ... ok [INFO] [stdout] test src/lib.rs - (line 61) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.67s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "dc5c184fca4efce64021f4e4e188ed63059cd014fe5f5eb478909ef9855808a7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dc5c184fca4efce64021f4e4e188ed63059cd014fe5f5eb478909ef9855808a7", kill_on_drop: false }` [INFO] [stdout] dc5c184fca4efce64021f4e4e188ed63059cd014fe5f5eb478909ef9855808a7